Power box



FIG. 1 is a top view of the powerbox;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a top view thereof;

FIG. 9 is a bottom view thereof;

FIG. 10 is a front view thereof;

FIG. 11 is a rear view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a left view thereof; and,

FIG. 14 is a perspective view thereof.

Broken lines show portions of the power box that form no part of the claimed design. 

CLAIM The ornamental design for a power box, as shown and described. 